KR20190009920A - A Method of manufacturing bath using high-strength hybrid resin, and a bath - Google Patents

Abstract

The present invention relates to a manufacturing method of a bathtub to hold water to take a bath, and a bathtub manufactured by the same. According to embodiments of the present invention, the manufacturing method of a bathtub with excellent hydrolysis resistance using a high-strength hybrid resin manufactures a bathtub with excellent hydrolysis resistance formed by a mold, and comprises: a step of coating a release agent on a forming surface of the mold and drying the release agent to form a release layer; a step of coating a coating agent on the release layer and drying the coating agent in a temperature range of 80-100°C to form a coating layer to protect the outer surface of the bathtub; a step of coating paint on the coating layer to form a paint layer to give a color to the bathtub; a step of injecting a room temperature hardening hybrid resin for forming the bathtub in the mold into the mold and hardening the room temperature hardening hybrid resin at room temperature to form the bathtub; a step of removing the bathtub from the mold; and a step of finishing the bathtub removed in the step of removing the bathtub. The hybrid resin is obtained by polymerizing an elastomer resin in a polyurethane resin. Therefore, manufacturing costs and manufacturing time can be shortened, and a bathtub with high durability, insulation, and mobility can be provided.

Description

[0001] The present invention relates to a method for producing a bath having excellent hydrolysis resistance using a high-strength hybrid resin and a bath prepared by the method,

The present invention relates to a method of producing a bath containing water for bathing and a bathtub manufactured by this method.

Generally, bathtubs are used to hold water for bathing, and Korean Patent Laid-Open No. 10-2002-0035031 (published on May 9, 2002) discloses a bathtub manufacturing method.

The above-described conventional bathtub manufacturing method includes steps of producing a transparent tubular molded product using a transparent acrylic disk as a base material, and curing the tubular tubular molded product under a predetermined curing condition after a reinforcing material is applied to a predetermined thickness on the back surface of the tubular molded product A step of attaching a picture or a photograph of a film form to the back side of the tub-shaped molded product by means of a bonding means so that the contents can be seen from the front side of the tub-shaped molded product after the molding step, . ≪ / RTI >

Conventional bathtubs having such a configuration can be formed by acrylic plates to produce transparent or bathtubs of various colors.

However, the conventional bath has a disadvantage in that the acrylic plate is cut, the shape of the bath is taut, the reinforcing operation and the heat treatment are performed to reinforce the strength, and the manufacturing process is complicated and the production time is long.

In addition, since a mold and a lot of materials are required for manufacturing, the production cost is increased, and cracks are generated or broken easily because they are made of acylol.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a high strength hybrid resin which is manufactured by molding a bathtub using a mold, The present invention also provides a method for producing a bath having excellent hydrolysis resistance by using a high-strength hybrid resin which is light in weight and easy to move, excellent in durability and warmth, and a bathtub manufactured by the method.

According to another aspect of the present invention, there is provided a method for manufacturing a bath having excellent hydrolysis resistance using a high-strength hybrid resin, the method comprising the steps of: Applying a coating agent to the release layer to protect the outer surface of the bath, and drying the coating layer at a temperature ranging from 80 ° C. to 100 ° C. to form a coating layer; Applying a paint to the coating layer to impart color to the bath, forming a paint layer, injecting a room temperature curable hybrid resin for forming the bath into the mold, curing the composition at room temperature , Demolding the bath in the mold, and demolding the bath in the demolding step Comprising the step of closing, and the hybrid resin is the polymerization of the elastomeric resin in the polyurethane resin.

The step of molding the jade may include injecting the hybrid resin into the mold at a plurality of times so that the air mixed in the hybrid resin is easily discharged at the time of injecting the hybrid resin.

The hybrid resin may be polymerized by mixing 40 parts by weight of the elastomer resin per 100 parts by weight of the polyurethane resin.

The hybrid resin includes a synthetic crosslinking agent for crosslinking the polyurethane resin and the elastomer resin. The synthetic crosslinking agent can be synthesized by reacting the polyurethane resin with a mixture of ethylene glycol, glycerin, and dipropylene glycol have.

The hybrid resin may include a functional powder that generates a perfume or a component beneficial to the human body so as to be formed in the bath.

The bath according to the embodiment of the present invention can be produced by a method of producing a bath having excellent hydrolysis resistance using the high-strength hybrid resin.

According to the present invention, it is possible to reduce the manufacturing time because it is manufactured in the form of molding in the mold, and since it is manufactured using only the hybrid resin, the manufacturing cost can be reduced because no other constitution is required.

In addition, it is possible not only to improve the warmth of the water contained in the bathtub by preparing the bathtub with the hybrid resin but also to move easily because of its high durability due to impact and light weight.

In addition, it is possible to form a coating layer to protect the outer appearance due to scratches, to realize various colors by the painted layer, to prevent the occurrence of safety accidents due to sliding due to the non-slip layer, The occurrence of mold can be minimized and the cleanliness can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a mold for producing a bath having excellent hydrolysis resistance using a high-strength hybrid resin according to an embodiment of the present invention; FIG.
2 is a flowchart illustrating a method of manufacturing a bath having excellent hydrolysis resistance using a high-strength hybrid resin according to an embodiment of the present invention.
3 is a side cross-sectional view showing a bathtub manufactured by a method of producing a bath having excellent hydrolysis resistance using a high-strength hybrid resin according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a method of manufacturing a bath having excellent hydrolysis resistance according to an embodiment of the present invention may include a step S10 of forming a release layer 110.

The step S10 of forming the release layer 110 may form the release layer 110 on the mold 200 so that the bathtub 100 molded in the mold 200 can be easily separated.

The mold releasing layer 110 may be formed on the mold 200 in such a manner that the releasing agent is applied to the surface of the mold 200 to be formed into the tub 100 and dried.

At this time, the releasing agent may be a releasing agent formed of a material such as silicone or rubber.

In the present invention, the mold 200 includes an inner mold 210 for forming the inner surface of the bathtub 100, an outer mold 230 for forming the outer surface of the bathtub 100, And the cover mold 250 may be disposed on the upper mold 250 in a state where the inner mold 210 is inserted into the outer mold 230 so that the bottom surface of the cover mold 250 is positioned on the upper side. The bath 100 can be formed.

At this time, the cover mold 250 may be provided with a gas hole 251 for discharging heat and gas generated during molding.

As shown in FIGS. 1 and 2, a method of manufacturing a bath having excellent hydrolysis resistance according to an embodiment of the present invention may include forming a coating layer 120 (S20).

Step S20 of forming the coating layer 120 is a step S20 of forming a coating layer 120 for protecting the surface of the bath 100 to be manufactured.

The coating layer 120 may be formed by coating a coating agent several times on the surface of the release layer 110 and drying the coating layer 120 at a predetermined drying temperature for about 20 minutes in a drying chamber .

In this case, the drying temperature for drying may be in the range of 80 ° C to 100 ° C. If the drying temperature is less than 80 ° C, the drying time is low and the drying time is long, C, the coating layer 120 may be cracked due to a high drying temperature.

On the other hand, the coating agent for forming the coating layer 120 has elasticity and elasticity, and can be realized as a known magnetic restoration coating agent having high scratch resistance and abrasion resistance.

As shown in FIGS. 1 and 2, a method of manufacturing a bath having excellent hydrolysis resistance according to an embodiment of the present invention may include a step S30 of forming a painted layer 130.

The step S30 of forming the painted layer 130 may be performed by applying the paint to the surface of the coating layer 120 so that the bathtub 100 to be manufactured has a hue.

On the other hand, the paint layer 130 can be formed by coating a paint of a desired color and then drying it. At this time, the paint may be embodied as a gel coat.

As shown in FIGS. 1 and 2, a method of manufacturing a bath with excellent hydrolysis resistance according to an embodiment of the present invention may include a step S40 of forming a bath 100.

The step S40 of forming the bath 100 is performed by injecting a hybrid resin having room temperature curing ability into the mold 200 having the paint layer 130 formed thereon and curing the bath 100 at a normal temperature, As shown in Fig.

On the other hand, when the hybrid resin is injected into the mold 200 in the step S40 of molding the bath 100, the injection amount of the hybrid resin can be injected in several divided portions.

Here, when the hybrid resin is injected at once, air or gas generated in the hybrid resin forms a cavity inside the bathtub 100, which may lower the durability of the bathtub 100.

In order to prevent this, when the hybrid resin is injected, the hybrid resin is divided and injected so that air or gas can be quickly discharged to prevent cavities from being generated inside the bathtub 100.

For example, in the embodiment, a hybrid resin is injected into the mold 200 in such a manner that about 80% of the hybrid resin is injected into the mold 200 for about 5 minutes, and then about 20% of the hybrid resin is injected.

Then, when the hybrid resin is injected into the mold 200, the bath 100 is molded in such a manner as to leave about 30 minutes at room temperature so that reaction and curing are sufficiently generated.

On the other hand, the hybrid resin which is injected into the mold 200 to form the bathtub 100 may be obtained by polymerizing a polyurethane resin with an elastomer resin.

Here, the polyurethane resin is a mixture of diphenylmethylene diisocyanate (NCO content 33.6%), Modifi diisocyabate (NCO content 28%), polyproplene glycol (OH Value: 26-29, molecular weight 2000), polyether ethylene oxide glycol (OH Value: 28) at a predetermined ratio, and reacting.

At this time, the predetermined mixing ratio of the polyurethane resin may be 70% by weight of diphenylmethane diisocyanate, 15% by weight of modifier diisocyanate, 10% by weight of polyether polyol and 5% by weight of polyether polyol ethylene oxide, To about 80 < RTI ID = 0.0 > 5 C < / RTI > for about 3 hours.

The elastomer resin may be selected from the group consisting of polypropylene (OH Value: 140 to 145), polypropylene glycol (OH Value: 209 to 210), ethylene glycol, triethylenediamine, , Copolymer propylene glycol (OH Vanlue: 4.5 to 5.7), antifoaming agent, and surfactant in predetermined proportions.

Here, the preset ratio of the elastomer resin is 45.1 wt% of polyether polyol, 18 wt% of polyether copolyol, 1.2 wt% of ethylene glycol, 1 wt% of triethylenediamine, 20 wt% of copolymer propylene glycol, 3 wt% 11.7% by weight of a surfactant may be mixed and mixed in the form of a stirrer at a speed of the stirrer of 50 rpm for about 3 hours at a temperature of 65 캜 in a reaction tank.

On the other hand, the polyurethane resin and the elastomer resin forming the hybrid resin can be polymerized by a synthetic crosslinking agent. The synthetic crosslinking agent is a mixture of a polyurethane resin and a mixture of ethylene glycol, glycerin, and dipropylene glycol in a ratio of 1: 9 , And a synthetic crosslinking agent can be synthesized by stirring the mixture at a speed of 1000 rpm for 60 minutes so as to react with each other.

The polyurethane resin, the elastomer resin, and the synthetic crosslinking agent thus prepared are mixed with 40 parts by weight of the elastomer resin and 10 parts by weight of the crosslinking agent per 100 parts by weight of the polyurethane resin to finally prepare the hybrid resin.

When the amount of the elastomer resin is less than 40 parts by weight per 100 parts by weight of the polyurethane resin, the characteristics of the elastomer resin are increased and the hardness is lowered, which makes it difficult to use as the bath 100. When the amount of the elastomer resin exceeds 40 parts by weight, The urethane resin reacts and many bubbles are generated, which may easily break.

When the hybrid resin is mixed with the polyurethane resin, the elastomer resin, and the synthetic crosslinking agent, it is preferable to inject the hybrid resin directly into the mold 200 in a mixed state since the resin is cured while being chemically reacted.

In the hybrid resin thus produced, the isocyanate of the polyurethane resin and the polyol of the elastomer resin are made into a copolymer state by the synthetic crosslinking agent that performs a synthetic crosslinking function (cross-linker), and the crosslinked material stable in high temperature, It is possible to increase the strength and durability and to realize various colors. In addition, since micro-bubbles are formed during the reaction, the water can be maintained for a long time due to the heat insulating effect.

In addition, the synthetic crosslinking agent is manufactured by a method of synthesizing a polyol having a short molecular weight such as a stain, triol, etc. at a terminal thereof in a synthesis of a primary synthesis of a primary isocyanate and a polyol, Physical properties can be improved.

The hybrid resin is eco-friendly because six heavy metals (Cu, Pb, Cd, Cr, As, and Mn) are not detected at all.

In addition, the hybrid resin may be mixed with a functional powder that discharges a component beneficial to the human body and a perfume that emits fragrance.

For example, the functional powder may be a powder that generates ions such as germanium, tourmaline, loess, silver, jade, quartz, quartz, ceramics, charcoal, etc., far infrared rays, or magnetic force.

In addition, the perfume may be embodied as aroma oil, spice, or the like so that the bathtub 100 is filled with a delicate fragrance.

As shown in FIGS. 1 and 2, a method of manufacturing a bath having excellent hydrolysis resistance according to an embodiment of the present invention may include a demolding step (S50).

This demolding step (S50) can separate the formed bathtub (100) from the mold (200).

At this time, since the mold releasing layer 110 is formed on the mold 200 before the tub 100 is formed, the tub 100 can be easily separated from the mold 200.

As shown in FIG. 2, the method of manufacturing a bath with excellent hydrolysis resistance according to an embodiment of the present invention may include closing the bath 100 (S60).

Step S60 of closing the bath 100 may remove unnecessary portions, for example, parting lines, in the tub 100 that has been demoulded from the mold 200.

On the other hand, the step of finishing the bathtub 100 (S60) can be performed by polishing the unnecessary portion of the demoulded bathtub 100 using a polishing apparatus.

In the step S60 of finishing the bath 100, a portion of the bath 100 where the coating layer 120 is not coated may be redrawn, or a portion where the coating layer 120 is not formed may be treated as a coat layer The finish can be done in the form of application.

In addition, step S60 of closing the bath 100 may include forming the anti-slip layer 140.

The step of forming the anti-slip layer 140 may form an embossed shape of an embossed shape on the inner bottom surface of the bathtub 100 to prevent a safety accident caused by slipping in the bathtub 100.

The step of forming the anti-slip layer 140 may include coating the coating layer 120 on the inner surface of the bath 100, that is, the coating layer 120 located on the outermost side of the bath 100, The anti-slip layer 140 may be formed by scattering the coating agent by an air brush and drying the coating agent so that fine embossed protrusions and depressions are generated by the coating agent forming the coating layer.

At this time, since the coating agent is viscous when the coating agent is scattered by the air brush, the anti-slip layer 140 may be formed by embossing droplets of droplets to form an embossed surface protruding in an embossing shape upon drying.

When the anti-slip layer 140 is formed, the coating agent is scattered and dried by thinly applying a solvent for dissolving the coating layer 120 so that the surface of the coating layer 120 is fluidized, (140) can be firmly fixed.

Of course, the coating layer 120 is non-uniformly dissolved by the solvent, and a fine uneven surface is also formed in the fine coating layer 120, so that the coating layer 120 can also perform a slip prevention function.

In addition, closing the bath 100 (S60) may include forming the glass film layer 150. [

In the step of forming the glass film layer 150, the water repellency is performed by the glass film, and by minimizing the residual of water in the bath 100, which is in contact with the water, it is possible to prevent the water or the mold from being caught.

The glass film layer 150 may be formed by coating the glass film coating agent on the outer surface of the bath 100 and drying the glass film coating agent when the anti-slip layer 140 is formed.

At this time, the glass film layer 150 may be formed by repeating application and drying of the glass film coating agent several times.

On the other hand, if the glass film layer 150 is formed in the bathtub 100, the bathtub 100 can be packaged and shipped.

As shown in FIG. 3, in the bathtub 100 manufactured by the method of manufacturing a bathtub excellent in hydrolysis resistance according to the embodiment of the present invention, the painted layer 130 is positioned on the outer surface of the bathtub 100 A coating layer 120 is formed on the outer surface of the painted layer 130 and a non-skid layer 140 is formed on the coating layer 120 positioned on the bottom of the bathtub 100. The outer surface of the non- (150).

Therefore, the method of manufacturing the bath with excellent hydrolysis resistance according to the embodiment of the present invention and the bathtub 100 manufactured by the method are manufactured in the form of being molded by the mold 200, Can be greatly reduced.

In addition, since the bath 100 is formed of the hybrid resin, it has high heat retention, high durability, and light weight, so that it can be easily transported.

In addition, the coating layer 120 may be formed by a coating agent having a self-restoring force on the outer surface to minimize the damage on the surface such as a scratch, and the bath 100 of various colors can be produced by the paint layer 130.

In addition, a slip prevention layer 140 is formed on the bottom of the bathtub 100 to prevent the occurrence of safety accidents due to slippage, and the glass film layer 150 is formed to minimize the generation of water or fungus, have.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes and modifications to the scope of the invention.

100: bathtub 110:
120: Coating layer 130: Coating layer
140: non-slip layer 150: glass film layer
200: mold 210: inner mold
230: outer mold 250: cover mold
251: Gas ball

Claims (6)

A method for producing a bathtub excellent in hydrolysis resistance which is formed by a mold,
Applying a releasing agent to the molding surface of the mold and drying to form a releasing layer,
Applying a coating agent to the release layer to protect the outer surface of the bath, and drying the coating layer at a temperature ranging from 80 DEG C to 100 DEG C to form a coating layer,
Applying a paint to the coating layer to impart color to the bathtub to form a painted layer,
Injecting a room-temperature-curable hybrid resin for forming the bath into the mold, curing the mold at room temperature to mold the furnace,
Demoulding the bath in the mold, and
And terminating the demoulded bath in the demolding step,
The hybrid resin
A method for producing a bathtub excellent in hydrolysis resistance using a high-strength hybrid resin, which comprises polymerizing a polyurethane resin with an elastomer resin. The method according to claim 1,
The step of shaping the jade
Wherein the hybrid resin is dividedly injected into the mold a plurality of times so that the air mixed in the hybrid resin is easily injected when the hybrid resin is injected. The method for producing a bath having excellent hydrolysis resistance by using the high-strength hybrid resin . The method according to claim 1,
The hybrid resin
And 40 parts by weight of the elastomer resin per 100 parts by weight of the polyurethane resin is mixed and polymerized to polymerize the elastomer resin. The method according to claim 1,
The hybrid resin
And a synthetic crosslinking agent for crosslinking the polyurethane resin and the elastomer resin,
Wherein the synthetic crosslinking agent is synthesized by reacting the polyurethane resin with a mixture of ethylene glycol, glycerin, and dipropylene glycol. The method according to claim 1,
The hybrid resin
And a functional powder for generating a fragrance or a component beneficial to the human body so as to form a flavor in the bath. The method for producing a bath having excellent hydrolysis resistance using the high-strength hybrid resin. A bathtub manufactured by the method for producing a bath having excellent hydrolysis resistance using the high-strength hybrid resin according to claim 1.

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